// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/formats/mp4/h264_annex_b_to_avc_bitstream_converter.h"
#include <stdint.h>
#include <memory>
#include "base/files/file.h"
#include "base/path_service.h"
#include "media/formats/mp4/box_definitions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
std::vector<uint8_t> ReadTestFile(std::string name) {
base::FilePath path;
base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &path);
path = path.Append(FILE_PATH_LITERAL(
"media/formats/mp4/h264_annex_b_fuzz_corpus"))
.AppendASCII(name);
base::File f(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
DCHECK(f.IsValid()) << "path: " << path.AsUTF8Unsafe();
auto size = f.GetLength();
std::vector<uint8_t> result(size);
if (size > 0)
f.ReadAtCurrentPosAndCheck(result);
return result;
}
} // namespace
namespace media {
TEST(H264AnnexBToAvcBitstreamConverterTest, Success) {
std::string chunks[] = {
"chunk1-config-idr.bin", "chunk2-non-idr.bin",
"chunk3-non-idr.bin", "chunk4-non-idr.bin",
"chunk5-non-idr.bin", "chunk6-config-idr.bin",
"chunk7-non-idr.bin", "pps_neq_sps_config_idr.bin"};
H264AnnexBToAvcBitstreamConverter converter;
for (std::string& name : chunks) {
SCOPED_TRACE(name);
auto input = ReadTestFile(name);
SCOPED_TRACE(input.size());
std::vector<uint8_t> output;
size_t desired_size = 0;
bool config_changed = false;
auto status =
converter.ConvertChunk(input, output, &config_changed, &desired_size);
ASSERT_EQ(status.code(), MP4Status::Codes::kBufferTooSmall);
output.resize(desired_size);
status = converter.ConvertChunk(input, output, &config_changed, nullptr);
EXPECT_TRUE(status.is_ok()) << status.message();
auto& config = converter.GetCurrentConfig();
if (name.find("config") != std::string::npos) {
// Chunks with configuration
EXPECT_TRUE(config_changed);
EXPECT_EQ(config.version, 1);
EXPECT_EQ(config.profile_indication, 66);
EXPECT_EQ(config.profile_compatibility, 0xC0);
EXPECT_EQ(config.avc_level, 30);
EXPECT_EQ(config.length_size, 4);
EXPECT_EQ(config.sps_list.size(), 1ul);
EXPECT_EQ(config.pps_list.size(), 1ul);
} else {
EXPECT_FALSE(config_changed);
}
std::vector<uint8_t> config_bin;
EXPECT_TRUE(config.Serialize(config_bin)) << " file: " << name;
}
}
// Tests that stream can contain multiple picture parameter sets and switch
// between them without having to reconfigure the decoder.
TEST(H264AnnexBToAvcBitstreamConverterTest, PPS_SwitchWithoutReconfig) {
std::vector<uint8_t> sps{0x00, 0x00, 0x00, 0x01, 0x27, 0x42, 0x00, 0x1E,
0x89, 0x8A, 0x12, 0x05, 0x01, 0x7F, 0xCA, 0x80};
std::vector<uint8_t> pps1{0x00, 0x00, 0x00, 0x01, 0x28, 0xce, 0x3c, 0x80};
std::vector<uint8_t> pps2{0x00, 0x00, 0x00, 0x01, 0x28, 0x53, 0x8f, 0x20};
std::vector<uint8_t> pps3{0x00, 0x00, 0x00, 0x01, 0x28, 0x73, 0x8F, 0x20};
std::vector<uint8_t> first_frame_idr{
0x00, 0x00, 0x00, 0x01, 0x25, 0xb4, 0x00, 0x10, 0x00, 0x24, 0xff,
0xff, 0xf8, 0x7a, 0x28, 0x00, 0x08, 0x0a, 0x7b, 0xdd
// Encoded data omitted here, it's not important for NALU parsing
};
std::vector<uint8_t> first_chunk;
first_chunk.insert(first_chunk.end(), sps.begin(), sps.end());
first_chunk.insert(first_chunk.end(), pps1.begin(), pps1.end());
first_chunk.insert(first_chunk.end(), pps2.begin(), pps2.end());
first_chunk.insert(first_chunk.end(), pps3.begin(), pps3.end());
first_chunk.insert(first_chunk.end(), first_frame_idr.begin(),
first_frame_idr.end());
std::vector<uint8_t> second_non_idr_chunk{
0x00, 0x00, 0x00, 0x01, 0x21, 0xd8, 0x00, 0x80, 0x04,
0x95, 0x9d, 0x45, 0x70, 0xd9, 0xbe, 0x21, 0xff, 0x87,
0x20, 0x03, 0x9c, 0x66, 0x84, 0xe1
// Encoded data omitted here, it's not important for NALU parsing
};
H264AnnexBToAvcBitstreamConverter converter;
std::vector<uint8_t> output(10000);
bool config_changed = false;
auto status =
converter.ConvertChunk(first_chunk, output, &config_changed, nullptr);
EXPECT_TRUE(status.is_ok()) << status.message();
EXPECT_TRUE(config_changed);
status = converter.ConvertChunk(second_non_idr_chunk, output, &config_changed,
nullptr);
EXPECT_TRUE(status.is_ok()) << status.message();
EXPECT_FALSE(config_changed);
}
// Tests that REXT metadata is handled correctly.
TEST(H264AnnexBToAvcBitstreamConverterTest, REXT) {
std::vector<uint8_t> sps{0, 0, 0, 1, 39, 100, 0, 31, 172, 86,
128, 80, 5, 186, 106, 12, 2, 12, 4};
std::vector<uint8_t> spsext{0, 0, 0, 1, 45, 208};
std::vector<uint8_t> pps{0, 0, 0, 1, 40, 238, 60, 176};
std::vector<uint8_t> idr{
0, 0, 0, 1, 37, 184, 32, 1, 239, 27, 89, 188, 127, 248, 98, 186,
// Encoded data omitted here, it's not important for NALU parsing
};
std::vector<uint8_t> chunk;
chunk.insert(chunk.end(), sps.begin(), sps.end());
chunk.insert(chunk.end(), spsext.begin(), spsext.end());
chunk.insert(chunk.end(), pps.begin(), pps.end());
chunk.insert(chunk.end(), idr.begin(), idr.end());
H264AnnexBToAvcBitstreamConverter converter;
std::vector<uint8_t> output(10000);
bool config_changed = false;
auto status = converter.ConvertChunk(chunk, output, &config_changed, nullptr);
EXPECT_TRUE(status.is_ok()) << status.message();
EXPECT_TRUE(config_changed);
auto& config = converter.GetCurrentConfig();
EXPECT_EQ(config.version, 1);
EXPECT_EQ(config.profile_indication, 100);
EXPECT_EQ(config.profile_compatibility, 0);
EXPECT_EQ(config.avc_level, 31);
EXPECT_EQ(config.length_size, 4);
EXPECT_EQ(config.sps_list.size(), 1ul);
EXPECT_EQ(config.pps_list.size(), 1ul);
EXPECT_EQ(config.chroma_format, 1);
EXPECT_EQ(config.bit_depth_luma_minus8, 0);
EXPECT_EQ(config.bit_depth_chroma_minus8, 0);
EXPECT_EQ(config.sps_ext_list.size(), 1ul);
}
TEST(H264AnnexBToAvcBitstreamConverterTest, Failure) {
H264AnnexBToAvcBitstreamConverter converter;
std::vector<uint8_t> input{0x0, 0x0, 0x0, 0x1, 0x9, 0x10,
0x0, 0x0, 0x0, 0x1, 0x67, 0x42};
std::vector<uint8_t> output(input.size());
auto status = converter.ConvertChunk(input, output, nullptr, nullptr);
ASSERT_EQ(status.code(), MP4Status::Codes::kInvalidSPS);
}
} // namespace media
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